Investigators looking for clues to what set off Vegas gunman

LAS VEGAS (AP) — Investigators trying to figure out why Stephen Paddock gunned down 59 people from his high-rise hotel suite are analyzing his computer and cellphone, looking at casino surveillance footage and seeking to interview his longtime girlfriend.

Nearly two days after the deadliest mass shooting in modern U.S. history, what set off the 64-year-old high-rolling gambler and retired accountant remained a big question mark Tuesday.

While the probe into his background included searches of two houses he owned in Nevada, some investigators turned their focus from the shooter’s perch t...